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. 2017 Apr 21:11:753-758.
doi: 10.2147/OPTH.S133207. eCollection 2017.

Comparison of the biometric measurements calculated with Zeiss IOL-Master and WaveLight OB-820

Georgios Labiris  1   2 , Panagiota Ntonti  2 , Konstantinos Ntitsos  2 , Andreas Katsanos  2 , Haris Sideroudi  2 , Vasilios Kozobolis  1   2
Affiliations

Comparison of the biometric measurements calculated with Zeiss IOL-Master and WaveLight OB-820

Georgios Labiris et al. Clin Ophthalmol. .

Abstract

Background: The primary objective of this study was to investigate the level of agreement between IOL-Master and OB-820 ocular biometers.

Materials and methods: In this prospective randomized case series, we measured the anterior chamber depth (ACD), the axial length (AL), the corneal radii (R1, R2), the ratio of mean corneal radius and spherical equivalent and the corneal astigmatism (cylinder [Cyl]) before and after cataract extraction surgery.

Results: Significant differences between pre- and postoperative data were observed for ACD for both biometric devices (P<0.01) and Cyl parameter in IOL-Master. Range and 95% limits of agreement (LoA) were clinically significantly different for AL parameter pre- and postoperatively and for R2 and radius and spherical equivalent postoperatively (P<0.001). The rest of the parameters presented sufficient 95% LoA, which imply good agreement.

Conclusion: In clinical practice, the IOL-master and OB-820 should not be used interchangeably due to discrepancy in the important AL parameter. Both biometers may provide consistent results regarding Cyl, ACD and R1.

Keywords: IOL-Master; OB-820; biometry; cataract; level of agreement.

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Conflict of interest statement

Disclosure None of the authors have received reimbursements, fees, funding, or salary in the past 5 years from an organization that may in any way gain or lose financially from the publication of this manuscript, either now or in the future. None of the authors hold any stocks or shares in an organization that may in any way gain or lose financially from the publication of this manuscript, either now or in the future. None of the authors have received reimbursements, fees, funding, or salary from an organization that holds or has applied for patents relating to the content of the manuscript. None of the authors of this manuscript have a financial interest in any material or method related to this work. No conflicting relationship exists for the authors. None of the authors has any proprietary interests or conflicts of interest related to this submission. It is not simultaneously being considered for publication in any other journal. The authors report no other conflicts of interest in this work.

Figures

Figure 1
Figure 1
Bland–Altman plot of AL (preoperative). Abbreviations: AL, axial length; SD, standard deviation.
Figure 2
Figure 2
Bland–Altman plot of AL (postoperative). Abbreviations: AL, axial length; SD, standard deviation.
Figure 3
Figure 3
Bland–Altman plot of R2 (postoperative). Note: R2, vertical corneal diameter. Abbreviation: SD, standard deviation.
Figure 4
Figure 4
Bland–Altman plot of RSE (postoperative). Abbreviations: RSE, radius/spherical equivalent; SD, standard deviation.
See this image and copyright information in PMC

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